from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The principal commercial method of producing ammonia, by direct combination of nitrogen and hydrogen under high pressure in the presence of a catalyst, often iron.
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- noun inorganic chemistry The
nitrogen- fixation reactionof nitrogen gasand hydrogengas, over an enriched ironor ruthenium catalyst, used industriallyto produce ammonia.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an industrial process for producing ammonia from nitrogen and hydrogen by combining them under high pressure in the presence of an iron catalyst
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After Fritz Haber (1868–1934), German chemist.
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